发明授权
US4820778A Random copolymer containing hexagonal imide units, a process for
producing the same, and an optical disc substrate made of the random
copolymer
失效
含有六亚甲基酰亚胺单元的无规共聚物，其制备方法和由无规共聚物制成的光盘基材
- 专利标题： Random copolymer containing hexagonal imide units, a process for producing the same, and an optical disc substrate made of the random copolymer
- 专利标题（中）： 含有六亚甲基酰亚胺单元的无规共聚物，其制备方法和由无规共聚物制成的光盘基材
-
申请号： US21267申请日： 1987-03-03
-
公开(公告)号： US4820778A公开(公告)日： 1989-04-11
- 发明人: Ikuji Ohtani , Akihiro Watanabe , Akihiro Wada , Rin-ichi Kakuta
- 申请人： Ikuji Ohtani , Akihiro Watanabe , Akihiro Wada , Rin-ichi Kakuta
- 申请人地址： JPX Osaka
- 专利权人： Asahi Kasei Kokyo Kabushiki Kaisha
- 当前专利权人： Asahi Kasei Kokyo Kabushiki Kaisha
- 当前专利权人地址： JPX Osaka
- 优先权： JPX61-308042 19861225; JPX61-308043 19861225
- 主分类号： C08F8/30
- IPC分类号： C08F8/30 ; C08F8/48 ; C08F8/32
摘要：
A novel random copolymer containing, in specific ratios, methyl methacrylate units, aromatic vinyl compound units, methacrylic acid units, hexagonal anhydride units and hexagonal imide units of the formula ##STR1## has been found to have excellent optical properties, mechanical strength, heat distortion resistance, heat decomposition resistance and oil resistance, and have low water absorption. The copolymer can advantageously be employed as a material for parts of light electric apparatus, engineering plastics, lenses, optical fiber cables, and is especially useful as a material for a substrate of optical discs.
公开/授权文献
- US4244180A Process for producing fuel gases from carbonaceous material 公开/授权日：1981-01-13
信息查询
IPC分类:
